====================================================== WARNING: possible circular locking dependency detected 4.19.88-syzkaller #0 Not tainted kobject: 'loop1' (000000002636b70f): kobject_uevent_env ------------------------------------------------------ syz-executor.2/4859 is trying to acquire lock: 000000003b33ae5b (&mm->mmap_sem){++++}, at: __might_fault+0xfb/0x1e0 mm/memory.c:4637 kobject: 'loop1' (000000002636b70f): fill_kobj_path: path = '/devices/virtual/block/loop1' but task is already holding lock: 0000000093d05254 (&rp->fetch_lock){+.+.}, at: mon_bin_get_event+0x3c/0x450 drivers/usb/mon/mon_bin.c:747 which lock already depends on the new lock. kobject: 'loop4' (0000000043cb53b7): kobject_uevent_env the existing dependency chain (in reverse order) is: -> #1 (&rp->fetch_lock){+.+.}: __mutex_lock_common kernel/locking/mutex.c:925 [inline] __mutex_lock+0xf7/0x1300 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 mon_bin_vma_fault+0x73/0x2d0 drivers/usb/mon/mon_bin.c:1237 __do_fault+0x111/0x480 mm/memory.c:3269 do_cow_fault mm/memory.c:3710 [inline] do_fault mm/memory.c:3812 [inline] handle_pte_fault mm/memory.c:4041 [inline] __handle_mm_fault+0xf6d/0x3f80 mm/memory.c:4165 handle_mm_fault+0x1b5/0x690 mm/memory.c:4202 faultin_page mm/gup.c:530 [inline] __get_user_pages+0x609/0x1860 mm/gup.c:730 populate_vma_page_range+0x20d/0x2a0 mm/gup.c:1234 kobject: 'loop4' (0000000043cb53b7): fill_kobj_path: path = '/devices/virtual/block/loop4' __mm_populate+0x204/0x380 mm/gup.c:1282 mm_populate include/linux/mm.h:2323 [inline] vm_mmap_pgoff+0x213/0x230 mm/util.c:362 ksys_mmap_pgoff+0x4aa/0x630 mm/mmap.c:1586 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:100 [inline] __se_sys_mmap arch/x86/kernel/sys_x86_64.c:91 [inline] __x64_sys_mmap+0xe9/0x1b0 arch/x86/kernel/sys_x86_64.c:91 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #0 (&mm->mmap_sem){++++}: lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3903 __might_fault mm/memory.c:4638 [inline] __might_fault+0x15e/0x1e0 mm/memory.c:4623 _copy_to_user+0x30/0x120 lib/usercopy.c:25 copy_to_user include/linux/uaccess.h:155 [inline] mon_bin_get_event+0x117/0x450 drivers/usb/mon/mon_bin.c:756 mon_bin_ioctl+0xacf/0xc80 drivers/usb/mon/mon_bin.c:1068 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xd5f/0x1380 fs/ioctl.c:688 ksys_ioctl+0xab/0xd0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- kobject: 'loop5' (000000005b97d9c5): kobject_uevent_env lock(&rp->fetch_lock); lock(&mm->mmap_sem); kobject: 'loop5' (000000005b97d9c5): fill_kobj_path: path = '/devices/virtual/block/loop5' lock(&rp->fetch_lock); lock(&mm->mmap_sem); *** DEADLOCK *** 1 lock held by syz-executor.2/4859: #0: 0000000093d05254 (&rp->fetch_lock){+.+.}, at: mon_bin_get_event+0x3c/0x450 drivers/usb/mon/mon_bin.c:747 stack backtrace: CPU: 0 PID: 4859 Comm: syz-executor.2 Not tainted 4.19.88-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x197/0x210 lib/dump_stack.c:118 print_circular_bug.isra.0.cold+0x1cc/0x28f kernel/locking/lockdep.c:1221 check_prev_add kernel/locking/lockdep.c:1861 [inline] check_prevs_add kernel/locking/lockdep.c:1974 [inline] validate_chain kernel/locking/lockdep.c:2415 [inline] __lock_acquire+0x2e19/0x49c0 kernel/locking/lockdep.c:3411 kobject: 'loop4' (0000000043cb53b7): kobject_uevent_env lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3903 __might_fault mm/memory.c:4638 [inline] __might_fault+0x15e/0x1e0 mm/memory.c:4623 _copy_to_user+0x30/0x120 lib/usercopy.c:25 copy_to_user include/linux/uaccess.h:155 [inline] mon_bin_get_event+0x117/0x450 drivers/usb/mon/mon_bin.c:756 mon_bin_ioctl+0xacf/0xc80 drivers/usb/mon/mon_bin.c:1068 kobject: 'loop4' (0000000043cb53b7): fill_kobj_path: path = '/devices/virtual/block/loop4' vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xd5f/0x1380 fs/ioctl.c:688 ksys_ioctl+0xab/0xd0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45a909 Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fac89e3cc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a909 RDX: 0000000020000240 RSI: 0000000040189206 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fac89e3d6d4 R13: 00000000004c45f5 R14: 00000000004d9d10 R15: 00000000ffffffff kobject: 'loop2' (00000000c0341cda): kobject_uevent_env kobject: 'loop2' (00000000c0341cda): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (00000000147daff6): kobject_uevent_env TCP: request_sock_TCP: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. kobject: 'loop3' (00000000147daff6): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (00000000c0341cda): kobject_uevent_env kobject: 'loop2' (00000000c0341cda): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (000000002636b70f): kobject_uevent_env kobject: 'loop1' (000000002636b70f): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (0000000043cb53b7): kobject_uevent_env kobject: 'loop4' (0000000043cb53b7): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (000000002636b70f): kobject_uevent_env kobject: 'loop1' (000000002636b70f): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (00000000c0341cda): kobject_uevent_env kobject: 'loop2' (00000000c0341cda): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (0000000043cb53b7): kobject_uevent_env kobject: 'loop4' (0000000043cb53b7): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (00000000c0341cda): kobject_uevent_env kobject: 'loop2' (00000000c0341cda): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (000000005b97d9c5): kobject_uevent_env kobject: 'loop5' (000000005b97d9c5): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000147daff6): kobject_uevent_env kobject: 'loop3' (00000000147daff6): fill_kobj_path: path = '/devices/virtual/block/loop3' TCP: request_sock_TCP: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. audit: type=1400 audit(1576175383.335:319): avc: denied { create } for pid=4958 comm="syz-executor.1" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_fib_lookup_socket permissive=1 audit: type=1400 audit(1576175383.345:320): avc: denied { connect } for pid=4958 comm="syz-executor.1" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_fib_lookup_socket permissive=1 kobject: 'loop3' (00000000147daff6): kobject_uevent_env kobject: 'loop3' (00000000147daff6): fill_kobj_path: path = '/devices/virtual/block/loop3' protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 audit: type=1804 audit(1576175383.345:321): pid=4959 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir041466427/syzkaller.sDgS4u/189/bus" dev="sda1" ino=17069 res=1 kobject: 'loop2' (00000000c0341cda): kobject_uevent_env audit: type=1804 audit(1576175383.345:322): pid=4959 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=invalid_pcr cause=ToMToU comm="syz-executor.1" name="/root/syzkaller-testdir041466427/syzkaller.sDgS4u/189/bus" dev="sda1" ino=17069 res=1 kobject: 'loop2' (00000000c0341cda): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (000000002636b70f): kobject_uevent_env kobject: 'loop1' (000000002636b70f): fill_kobj_path: path = '/devices/virtual/block/loop1' audit: type=1804 audit(1576175383.385:323): pid=5024 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir041466427/syzkaller.sDgS4u/189/bus" dev="sda1" ino=17069 res=1 kobject: 'loop3' (00000000147daff6): kobject_uevent_env kobject: 'loop3' (00000000147daff6): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (0000000043cb53b7): kobject_uevent_env audit: type=1804 audit(1576175383.385:324): pid=5014 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=invalid_pcr cause=ToMToU comm="syz-executor.1" name="/root/syzkaller-testdir041466427/syzkaller.sDgS4u/189/bus" dev="sda1" ino=17069 res=1 kobject: 'loop4' (0000000043cb53b7): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (00000000c0341cda): kobject_uevent_env kobject: 'loop2' (00000000c0341cda): fill_kobj_path: path = '/devices/virtual/block/loop2' audit: type=1804 audit(1576175383.732:325): pid=5087 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=invalid_pcr cause=open_writers comm="syz-executor.0" name="/root/syzkaller-testdir157201687/syzkaller.HpNFYO/246/bus" dev="sda1" ino=17068 res=1 audit: type=1804 audit(1576175383.742:326): pid=5087 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=invalid_pcr cause=ToMToU comm="syz-executor.0" name="/root/syzkaller-testdir157201687/syzkaller.HpNFYO/246/bus" dev="sda1" ino=17068 res=1 kobject: 'loop1' (000000002636b70f): kobject_uevent_env kobject: 'loop1' (000000002636b70f): fill_kobj_path: path = '/devices/virtual/block/loop1' audit: type=1804 audit(1576175383.772:327): pid=5083 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir041466427/syzkaller.sDgS4u/190/bus" dev="sda1" ino=17743 res=1 audit: type=1804 audit(1576175383.781:328): pid=5083 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=invalid_pcr cause=ToMToU comm="syz-executor.1" name="/root/syzkaller-testdir041466427/syzkaller.sDgS4u/190/bus" dev="sda1" ino=17743 res=1 kobject: 'loop5' (000000005b97d9c5): kobject_uevent_env kobject: 'loop5' (000000005b97d9c5): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (00000000c0341cda): kobject_uevent_env kobject: 'loop2' (00000000c0341cda): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (00000000147daff6): kobject_uevent_env kobject: 'loop3' (00000000147daff6): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (000000002636b70f): kobject_uevent_env kobject: 'loop1' (000000002636b70f): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (000000005b97d9c5): kobject_uevent_env kobject: 'loop5' (000000005b97d9c5): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (00000000c0341cda): kobject_uevent_env kobject: 'loop2' (00000000c0341cda): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (0000000043cb53b7): kobject_uevent_env kobject: 'loop4' (0000000043cb53b7): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (000000005b97d9c5): kobject_uevent_env kobject: 'loop5' (000000005b97d9c5): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000147daff6): kobject_uevent_env kobject: 'loop3' (00000000147daff6): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (00000000c0341cda): kobject_uevent_env kobject: 'loop2' (00000000c0341cda): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (0000000043cb53b7): kobject_uevent_env kobject: 'loop4' (0000000043cb53b7): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (000000005b97d9c5): kobject_uevent_env kobject: 'loop5' (000000005b97d9c5): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (000000002636b70f): kobject_uevent_env kobject: 'loop1' (000000002636b70f): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (00000000147daff6): kobject_uevent_env kobject: 'loop3' (00000000147daff6): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (0000000043cb53b7): kobject_uevent_env kobject: 'loop4' (0000000043cb53b7): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (000000005b97d9c5): kobject_uevent_env kobject: 'loop5' (000000005b97d9c5): fill_kobj_path: path = '/devices/virtual/block/loop5' K: renamed from caif0 kobject: 'loop2' (00000000c0341cda): kobject_uevent_env kobject: 'caif0' (00000000a0ffced2): fill_kobj_path: path = '/devices/virtual/net/caif0' kobject: 'loop2' (00000000c0341cda): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'K' (00000000a0ffced2): kobject_uevent_env kobject: 'K' (00000000a0ffced2): fill_kobj_path: path = '/devices/virtual/net/K' kobject: 'loop3' (00000000147daff6): kobject_uevent_env kobject: 'loop3' (00000000147daff6): fill_kobj_path: path = '/devices/virtual/block/loop3' chnl_net:chnl_net_open(): err: Unable to register and open device, Err:-19 kobject: 'loop4' (0000000043cb53b7): kobject_uevent_env caif:caif_disconnect_client(): nothing to disconnect kobject: 'loop4' (0000000043cb53b7): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (000000005b97d9c5): kobject_uevent_env chnl_net:chnl_flowctrl_cb(): NET flowctrl func called flow: CLOSE/DEINIT chnl_net:chnl_net_open(): state disconnected kobject: 'loop5' (000000005b97d9c5): fill_kobj_path: path = '/devices/virtual/block/loop5' device K entered promiscuous mode A link change request failed with some changes committed already. Interface K may have been left with an inconsistent configuration, please check. kobject: 'loop4' (0000000043cb53b7): kobject_uevent_env kobject: 'loop4' (0000000043cb53b7): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (000000002636b70f): kobject_uevent_env kobject: 'loop1' (000000002636b70f): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (000000005b97d9c5): kobject_uevent_env kobject: 'loop5' (000000005b97d9c5): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (0000000043cb53b7): kobject_uevent_env kobject: 'loop4' (0000000043cb53b7): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (000000005b97d9c5): kobject_uevent_env kobject: 'loop5' (000000005b97d9c5): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000147daff6): kobject_uevent_env kobject: 'loop3' (00000000147daff6): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (000000005b97d9c5): kobject_uevent_env chnl_net:chnl_net_open(): err: Unable to register and open device, Err:-19 kobject: 'loop5' (000000005b97d9c5): fill_kobj_path: path = '/devices/virtual/block/loop5' caif:caif_disconnect_client(): nothing to disconnect kobject: 'loop1' (000000002636b70f): kobject_uevent_env kobject: 'loop1' (000000002636b70f): fill_kobj_path: path = '/devices/virtual/block/loop1' chnl_net:chnl_flowctrl_cb(): NET flowctrl func called flow: CLOSE/DEINIT chnl_net:chnl_net_open(): state disconnected A link change request failed with some changes committed already. Interface K may have been left with an inconsistent configuration, please check. kobject: 'loop2' (00000000c0341cda): kobject_uevent_env kobject: 'loop2' (00000000c0341cda): fill_kobj_path: path = '/devices/virtual/block/loop2' sock: sock_set_timeout: `syz-executor.4' (pid 5547) tries to set negative timeout chnl_net:chnl_net_open(): err: Unable to register and open device, Err:-19 caif:caif_disconnect_client(): nothing to disconnect chnl_net:chnl_flowctrl_cb(): NET flowctrl func called flow: CLOSE/DEINIT chnl_net:chnl_net_open(): state disconnected kobject: 'loop5' (000000005b97d9c5): kobject_uevent_env kobject: 'loop5' (000000005b97d9c5): fill_kobj_path: path = '/devices/virtual/block/loop5' sock: sock_set_timeout: `syz-executor.4' (pid 5657) tries to set negative timeout kobject: 'loop3' (00000000147daff6): kobject_uevent_env A link change request failed with some changes committed already. Interface K may have been left with an inconsistent configuration, please check. kobject: 'loop3' (00000000147daff6): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (0000000043cb53b7): kobject_uevent_env kobject: 'loop4' (0000000043cb53b7): fill_kobj_path: path = '/devices/virtual/block/loop4' K: renamed from caif0 kobject: 'caif0' (00000000aad9bf14): fill_kobj_path: path = '/devices/virtual/net/caif0' kobject: 'K' (00000000aad9bf14): kobject_uevent_env sock: sock_set_timeout: `syz-executor.4' (pid 5667) tries to set negative timeout kobject: 'K' (00000000aad9bf14): fill_kobj_path: path = '/devices/virtual/net/K' kobject: 'loop1' (000000002636b70f): kobject_uevent_env chnl_net:chnl_net_open(): err: Unable to register and open device, Err:-19 kobject: 'loop1' (000000002636b70f): fill_kobj_path: path = '/devices/virtual/block/loop1' caif:caif_disconnect_client(): nothing to disconnect kobject: 'loop2' (00000000c0341cda): kobject_uevent_env kobject: 'loop2' (00000000c0341cda): fill_kobj_path: path = '/devices/virtual/block/loop2' chnl_net:chnl_flowctrl_cb(): NET flowctrl func called flow: CLOSE/DEINIT kobject: 'loop4' (0000000043cb53b7): kobject_uevent_env kobject: 'loop4' (0000000043cb53b7): fill_kobj_path: path = '/devices/virtual/block/loop4' chnl_net:chnl_net_open(): state disconnected sock: sock_set_timeout: `syz-executor.4' (pid 5676) tries to set negative timeout device K entered promiscuous mode chnl_net:chnl_net_open(): err: Unable to register and open device, Err:-19 caif:caif_disconnect_client(): nothing to disconnect kobject: 'loop4' (0000000043cb53b7): kobject_uevent_env kobject: 'loop4' (0000000043cb53b7): fill_kobj_path: path = '/devices/virtual/block/loop4' chnl_net:chnl_flowctrl_cb(): NET flowctrl func called flow: CLOSE/DEINIT chnl_net:chnl_net_open(): state disconnected kobject: 'loop3' (00000000147daff6): kobject_uevent_env kobject: 'loop3' (00000000147daff6): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (000000005b97d9c5): kobject_uevent_env kobject: 'loop5' (000000005b97d9c5): fill_kobj_path: path = '/devices/virtual/block/loop5' chnl_net:chnl_net_open(): err: Unable to register and open device, Err:-19 kobject: 'loop1' (000000002636b70f): kobject_uevent_env kobject: 'loop1' (000000002636b70f): fill_kobj_path: path = '/devices/virtual/block/loop1' caif:caif_disconnect_client(): nothing to disconnect kobject: 'loop2' (00000000c0341cda): kobject_uevent_env kobject: 'loop2' (00000000c0341cda): fill_kobj_path: path = '/devices/virtual/block/loop2' chnl_net:chnl_flowctrl_cb(): NET flowctrl func called flow: CLOSE/DEINIT chnl_net:chnl_net_open(): state disconnected kobject: 'loop3' (00000000147daff6): kobject_uevent_env chnl_net:chnl_net_open(): err: Unable to register and open device, Err:-19 caif:caif_disconnect_client(): nothing to disconnect kobject: 'loop3' (00000000147daff6): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (0000000043cb53b7): kobject_uevent_env kobject: 'loop4' (0000000043cb53b7): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop4' (0000000043cb53b7): kobject_uevent_env chnl_net:chnl_flowctrl_cb(): NET flowctrl func called flow: CLOSE/DEINIT kobject: 'loop4' (0000000043cb53b7): fill_kobj_path: path = '/devices/virtual/block/loop4' chnl_net:chnl_net_open(): state disconnected kobject: 'loop5' (000000005b97d9c5): kobject_uevent_env kobject: 'loop5' (000000005b97d9c5): fill_kobj_path: path = '/devices/virtual/block/loop5' chnl_net:chnl_net_open(): err: Unable to register and open device, Err:-19 caif:caif_disconnect_client(): nothing to disconnect chnl_net:chnl_flowctrl_cb(): NET flowctrl func called flow: CLOSE/DEINIT kobject: 'loop3' (00000000147daff6): kobject_uevent_env kobject: 'loop3' (00000000147daff6): fill_kobj_path: path = '/devices/virtual/block/loop3' chnl_net:chnl_net_open(): state disconnected kobject: 'loop2' (00000000c0341cda): kobject_uevent_env kobject: 'loop2' (00000000c0341cda): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (000000002636b70f): kobject_uevent_env kobject: 'loop1' (000000002636b70f): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (000000005b97d9c5): kobject_uevent_env kobject: 'loop5' (000000005b97d9c5): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (0000000043cb53b7): kobject_uevent_env kobject: 'loop4' (0000000043cb53b7): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (000000005b97d9c5): kobject_uevent_env kobject: 'loop5' (000000005b97d9c5): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (0000000043cb53b7): kobject_uevent_env kobject: 'loop4' (0000000043cb53b7): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (00000000c0341cda): kobject_uevent_env kobject: 'loop2' (00000000c0341cda): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (000000002636b70f): kobject_uevent_env kobject: 'loop1' (000000002636b70f): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (00000000147daff6): kobject_uevent_env kobject: 'loop3' (00000000147daff6): fill_kobj_path: path = '/devices/virtual/block/loop3'